Mario Kart is working normally when at the start screen all the way through to where you pick which courses you wish to play on. As soon as it jumps to the intro to the first track it gets incredibly laggy, moving at only an FPS of 10-19.

Luigi's Mansion is working TOO fast, its moving at such a fast pace I can't even play it, the screen goes out and I have to re-open Dolphin.

Super Smash Bros Melee works acceptionally well throughout, but only if I set up a match with me and one other character, if I play a match with 3 or 4 people the lag is depressingly miserable.

The only game thats works perfectly is Mario Party 7

It's weird but not suprising, I know that I most likely need different configurations to play the games, but I'm not sure how to fix it. Bottom line, how do I fix this mess?